To Move a Main Task Using Cut and Paste

In the Customize dialog on the Tools tab, expand the Main Tasks tab.
Expand the User Tasks section and expand the open DGN library.
Select the Main task that you want to move.
Do one of the following:

Click the Cut icon.

or
Right-click the Main task and select Cut from the pop-up menu.
Select the open DGN file or the Main task to which you are moving it.
Do one of the following:

Click the Paste icon.

or
Right-click the location to which you are moving the Main task and select Paste from the pop-up menu.